package com.ruoyi.system.controller;

import java.util.*;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.ruoyi.common.core.constant.Constants;
import com.ruoyi.common.core.constant.UserConstants;
import com.ruoyi.common.core.utils.SecurityUtils;
import com.ruoyi.common.core.utils.StringUtils;
import com.ruoyi.common.core.web.controller.BaseController;
import com.ruoyi.common.core.web.domain.AjaxResult;
import com.ruoyi.common.log.annotation.Log;
import com.ruoyi.common.log.enums.BusinessType;
import com.ruoyi.common.security.annotation.PreAuthorize;
import com.ruoyi.system.domain.SysMenu;
import com.ruoyi.system.service.ISysMenuService;

/**
 * 菜单信息
 *
 * @author ruoyi
 */
@RestController
@RequestMapping("/menu")
public class SysMenuController extends BaseController {
    @Autowired
    private ISysMenuService menuService;

    /**
     * 系统超级管理员查询出所有的菜单信息
     * 用于分配菜单，所以此处只能展示非超管菜单用于分配
     */
    @GetMapping(value = "/allMenus/{tempId}")
    public AjaxResult allMenus(@PathVariable("tempId") String tempId) {
//        checkSuperAdmin();
        List<SysMenu> menus = menuService.listBySuperFlag(Constants.FLAG_NO);
        AjaxResult ajax = AjaxResult.success();
        // 对应模板已分配的菜单
        ajax.put("checkedKeys", menuService.listCheckedMenusByTempId(tempId));
        // 平台超级管理员才可以查看所有菜单
        ajax.put("menus", menuService.buildMenuTreeSelect(menus));
        return ajax;
    }

    /**
     * 改变超级管理菜单
     *
     * @param menuIds 菜单编号
     * @return 结果
     */
    @PostMapping(value = "/changeMenu")
    public AjaxResult changeTenantMenu(@RequestBody List<Integer> menuIds) {
        int i = menuService.changeSuperMenu(menuIds);
        return toAjax(i);
    }

    /**
     * 获取菜单列表
     */
    @PreAuthorize(hasPermi = "system:menu:list")
    @GetMapping("/list")
    public AjaxResult list(SysMenu menu) {
        Long userId = SecurityUtils.getUserId();
        List<SysMenu> menus = menuService.selectMenuList(menu, userId);
        return AjaxResult.success(menus);
    }

    /**
     * 根据菜单编号获取详细信息
     */
    @PreAuthorize(hasPermi = "system:menu:query")
    @GetMapping(value = "/{menuId}")
    public AjaxResult getInfo(@PathVariable Long menuId) {
        return AjaxResult.success(menuService.selectMenuById(menuId));
    }

    /**
     * 获取菜单下拉树列表
     */
    @GetMapping("/treeselect")
    public AjaxResult treeselect(SysMenu menu) {
        AjaxResult ajaxResult = new AjaxResult();
        Long userId = SecurityUtils.getUserId();
        List<SysMenu> menus = menuService.selectMenuList(menu, userId);
        //构建已选择的菜单
        List<Long> menuAllCheckedKeys = getMenuAllCheckedKeys(menus);
        //没有选择的
        ajaxResult.put("data", menuService.buildMenuTreeSelect(menus));
        ajaxResult.put("checkedKeys", menuAllCheckedKeys);
        return ajaxResult;
    }

    //构建已选择的菜单
    private List<Long> getMenuAllCheckedKeys(List<SysMenu> menus) {
        List<Long> menuAllCheckedKeys = new ArrayList<>();
        List<Long> sysMenuIds = new ArrayList<>();
        for (SysMenu sysMenu : menus) {
            //把superFlag = 0 的选出来
            //拿到所有选中的menuId
            if (sysMenu.getSuperFlag() == Constants.FLAG_NO) {
                //过滤掉没有父类的id
                if (sysMenu.getParentId() != 0) {
                    //选中的菜单id
                    sysMenuIds.add(sysMenu.getMenuId());
                }
            }
        }
        for (SysMenu sysMenu : menus){
            if(sysMenu.getParentId() !=0){
                for(Long l : sysMenuIds){
                    //TODO 遍历四级时有错误
                    if(sysMenu.getParentId() == l && sysMenu.getSuperFlag() == Constants.FLAG_NO){
                        menuAllCheckedKeys.add(sysMenu.getMenuId());
                    }
                }
            }
        }
        return menuAllCheckedKeys;
    }
    /**
     * 加载对应角色菜单列表树
     */
    @GetMapping(value = "/roleMenuTreeselect/{roleId}")
    public AjaxResult roleMenuTreeselect(@PathVariable("roleId") Long roleId) {
        Long userId = SecurityUtils.getUserId();
        List<SysMenu> menus = menuService.selectMenuList(userId);
        AjaxResult ajax = AjaxResult.success();
        ajax.put("checkedKeys", menuService.selectMenuListByRoleId(roleId));
        ajax.put("menus", menuService.buildMenuTreeSelect(menus));
        return ajax;
    }

    /**
     * 新增菜单
     */
    @PreAuthorize(hasPermi = "system:menu:add")
    @Log(title = "菜单管理", businessType = BusinessType.INSERT)
    @PostMapping
    public AjaxResult add(@Validated @RequestBody SysMenu menu) {
        if (UserConstants.NOT_UNIQUE.equals(menuService.checkMenuNameUnique(menu))) {
            return AjaxResult.error("新增菜单'" + menu.getMenuName() + "'失败，菜单名称已存在");
        } else if (UserConstants.YES_FRAME.equals(menu.getIsFrame())
                && !StringUtils.startsWithAny(menu.getPath(), Constants.HTTP, Constants.HTTPS)) {
            return AjaxResult.error("新增菜单'" + menu.getMenuName() + "'失败，地址必须以http(s)://开头");
        }
        menu.setCreateBy(SecurityUtils.getUsername());
        return toAjax(menuService.insertMenu(menu));
    }

    /**
     * 修改菜单
     */
    @PreAuthorize(hasPermi = "system:menu:edit")
    @Log(title = "菜单管理", businessType = BusinessType.UPDATE)
    @PutMapping
    public AjaxResult edit(@Validated @RequestBody SysMenu menu) {
        if (UserConstants.NOT_UNIQUE.equals(menuService.checkMenuNameUnique(menu))) {
            return AjaxResult.error("修改菜单'" + menu.getMenuName() + "'失败，菜单名称已存在");
        } else if (UserConstants.YES_FRAME.equals(menu.getIsFrame())
                && !StringUtils.startsWithAny(menu.getPath(), Constants.HTTP, Constants.HTTPS)) {
            return AjaxResult.error("修改菜单'" + menu.getMenuName() + "'失败，地址必须以http(s)://开头");
        } else if (menu.getMenuId().equals(menu.getParentId())) {
            return AjaxResult.error("修改菜单'" + menu.getMenuName() + "'失败，上级菜单不能选择自己");
        }
        menu.setUpdateBy(SecurityUtils.getUsername());
        return toAjax(menuService.updateMenu(menu));
    }

    /**
     * 删除菜单
     */
    @PreAuthorize(hasPermi = "system:menu:remove")
    @Log(title = "菜单管理", businessType = BusinessType.DELETE)
    @DeleteMapping("/{menuId}")
    public AjaxResult remove(@PathVariable("menuId") Long menuId) {
        if (menuService.hasChildByMenuId(menuId)) {
            return AjaxResult.error("存在子菜单,不允许删除");
        }
        if (menuService.checkMenuExistRole(menuId)) {
            return AjaxResult.error("菜单已分配,不允许删除");
        }
        return toAjax(menuService.deleteMenuById(menuId));
    }

    /**
     * 获取路由信息
     *
     * @return 路由信息
     */
    @GetMapping("getRouters")
    public AjaxResult getRouters() {
        Long userId = SecurityUtils.getUserId();
        List<SysMenu> menus = menuService.selectMenuTreeByUserId(userId);
        return AjaxResult.success(menuService.buildMenus(menus));
    }
}